After hurting his leg playing football, Conor has to use a crutch and isn't able to walk very far. This gets the children thinking about how different animals get around.
At the school, the group are getting ready to go to Otter Creek for a picnic. While Ruari gets their lunches ready, Lee and Conor argue over who is getting more bananas and who's getting less.
After spending the morning pretending to build a skyscraper, the children decide to go on a hike to Inis Spraoi's oldest building, the mound at Two-Knocks.
The class are being measured by Mr O'Dear to see how much they've grown. They're all getting bigger, but their poor plant isn't growing.